Which sets of measurements could be the interior angle measures of a triangle? Select each correct answer. A. 10°, 10°, 160° B. 15°, 75°, 90° C. 20°, 80°, 100° D. 35°, 35°, 105° E. 60°, 60°, 60° After reading the prompt and the answer choices above, what is one thing that you must know in order to answer this question?